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Thursday, Dec. 5 th : “A” Day Friday, Dec. 6 th : “B” Day Agenda

Thursday, Dec. 5 th : “A” Day Friday, Dec. 6 th : “B” Day Agenda. Homework Questions/Problems (pg. 405: #1-5) Check lab write-ups Lab discussion/safety items Conduct lab: “Energy and Entropy: Phase Changes” Lab will be due next time… **What Would Life Be Like?”

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Thursday, Dec. 5 th : “A” Day Friday, Dec. 6 th : “B” Day Agenda

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  1. Thursday, Dec. 5th: “A” DayFriday, Dec. 6th: “B” DayAgenda • Homework Questions/Problems (pg. 405: #1-5) • Check lab write-ups • Lab discussion/safety items • Conduct lab: “Energy and Entropy: Phase Changes” • Lab will be due next time… **What Would Life Be Like?” paper due next time!**

  2. “Energy and Entropy: Phase Changes” Lab Discussion • Since sodium thiosulfate pentahydrate is a solid, you will melt it first (Part 1, steps #1-3). (no data collection) • Once you start cooling the liquid, you will be recording temperature readings every 15 seconds. • In Part 1, step #4, don’t forget to add 1 or 2 seed crystals of sodium thiosulfate pentahydrate to the test tube. • When you are finished, put your test tube into the rack on the back supply table and wash your hands.

  3. “Energy and Entropy: Phase Changes” Safety Issues • Safety glasses and aprons – all the time! • Since we will be using bunsen burners, hair must be tied back. • Be careful with the burner flame and the glassware. Remember, hot glassware looks the same as cold glassware! • Be sure to wash your hands before leaving the lab area!

  4. “Energy and Entropy: Phase Changes” • When you’re done in the lab, start working on the graph, analysis, conclusion, and extension questions with your lab partner… • Lab will be due next time…

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